The crossword solution for the term 'HUMAN ENDING' is 'OID'. OID is an abbreviation for the suffix '-oid', which is used to FORM adjectives that mean 'resembling or having the FORM of' something. It is derived from the Greek word 'eidos', meaning 'FORM'. This suffix is commonly used in medical terminology to describe a condition or disease that resembles another. For example, 'myxoid' means 'resembling mucus'.